In the given quadratic polynomial, there are three terms:
The second degree term:
The first degree term:
The constant term: The blank line in your given problem.
Terms are composed of the variable, in this case x and a coefficient. For your second degree term, the coefficient is 1. For your first degree term the coefficient is -6.
To perform the process of completing the square, you take the coefficient on the first degree or x term and divide it by 2. Whatever you get, square that value, in other words, multiply it by itself. The result is the necessary constant term that you are trying to find.
